A large picture,2m by 2m,is displayed on a wall.It is place in a frame with a border of uniform width.
A. How would you represent the length of side of the frame?
B. What expression represent the area of the frame?
4 answers
see your previous post of this question. What do you not understand about what I said there?
Can you please answer my question.
ok. the picture has length 2 and width 2
There is a frame of width w all around. So, now the length is w+2+w and the width is w+2+w, or 2+2w
So, the area (which I am sure you know is length * width) is just
(2+2w)(2+2w) = (2+2w)^2 = 4(w+1)^2
There is a frame of width w all around. So, now the length is w+2+w and the width is w+2+w, or 2+2w
So, the area (which I am sure you know is length * width) is just
(2+2w)(2+2w) = (2+2w)^2 = 4(w+1)^2
Are you sure?
1 answer